logarithmic relative retention value

例句：

1. 1. The growth rate of the population is logarithmic to time.
   人口增长率与时间呈对数关系。
2. 2.The logarithmic function is used to calculate the area under a curve.
   对数函数用于计算曲线下的面积。
3. 3.The logarithmic scale is useful for measuring distances on a map.
   对数刻度在地图上测量距离时很有用。